In an effort to protect automobile passengers and increase usage of seat
belts, the Government mandated the Ignition/Seat Belt Interlock System
for all cars assembled with the intent of U. S. delivery. This complicated
system included an ignition interlock that prevented the engine from starting
if belts for occupied front seats are not buckled in the proper sequence,
which means before starting the car.
Confused? So were many new car buyers in 1974. A warning light and buzzer
remind outboard front seat passengers to buckle up. A logic circuit prevents
the engine from starting if any outboard passenger attempts to beat the
system by extending the harness before sitting, or buckling belts together
behind them. And if something broke or malfunctioned and the car needed
to be driven, a by-pass button was provided under the hood to enable the
driver to start the car. Needless to say, this was NOT A POPULAR FEATURE!
If a package (or a heavy purse) were placed on the passenger seat, the
car wouldn't start! This was an additional hassle that the public did not
want on its cars, and no doubt caused a few to wonder if they really needed
a new car. On top of the interlock system, 1974 was a bad year to buy big
cars due to the oil crisis. Americans were becoming increasingly wary of
large cars with poor gas mileage, even if they could afford the gas (which
most T-Bird owners probably could), there were reports of long lines and
stations running out of gas. A luxury car really isn't a luxury if you
can't buy gas to drive it.
The impending fuel crisis was unknown to Ford during the time the 1974
Thunderbird was being updated. Virtually the same car as the Mark IV, the
Thunderbird would have to create interest with annual updates. And 1974
was the last year any noticeable changes were made to the Thunderbird until
its next restyle in 1977.
The rear bumper and tail lamp area were the major change for the year.
The Thunderbird lost its full-width tail lamps that had been its trademark
almost every year since 1966 (with the exception being 1969). The rear
bumper, by federal mandate, had to withstand direct impact at five miles
per hour without damage. This mandate was a requirement for the front bumpers
in 1973, and these two items alone contributed to about 350 extra pounds.
Is it any wonder the average mileage was around 11.6 mpg as tested under
varying conditions by Motor Trend magazine?
The backup lights, formerly in the rear bumper, were moved up into the
center section of the tail lamps, similar to 1966 except the clear section
didn't illuminate in red with the running lights. A die cast Thunderbird
emblem was placed in the middle of this clear lens. The red sections on
either side of the backup light were divided into four sections, with the
outermost section featuring a rounded top edge, to create a "drop
off" effect very much like the top edge of the tail lamps on the 1973
models. The red sections all lit up with the running lights, with the two
outboard sections serving double duty as brake and signal lamps.
Inside, very few changes were made. It is significant to note that 1974
was the first year since 1958 that the Thunderbird did not have bucket
front seats available. They had been optional at extra cost since 1968,
and from 1969 on most Thunderbirds from that point forward were equipped
with one form or another of the standard bench seat. The sales literature
for 1974 pointed out that "Just moments inside Thunderbird can spoil you for anything else.
It is that luxurious". As long as your idea of luxury isn't bucket seats, that is.
The era of the big luxurious Thunderbird was coming to a close quickly.
Little did anyone know, a new smaller Thunderbird was in the design stage.
Yet this next generation would soar to new heights of popularity, leaving
all previous sales records far behind.
Thunderbird '74. Meticulously designed as only a classic can be. With innovative
engineering and a level of road performance unique in all the world. Make
a little Thunder of your own.